Import X server from vnc-3.3.7.

[rdpsrv] / Xserver / lib / font / util / fontaccel.c

diff --git a/Xserver/lib/font/util/fontaccel.c b/Xserver/lib/font/util/fontaccel.c
new file mode 100644 (file)
index 0000000..5417e1c
--- /dev/null
+++ b/Xserver/lib/font/util/fontaccel.c
@@ -0,0 +1,104 @@
+/* $XConsortium: fontaccel.c,v 1.4 94/04/17 20:17:31 gildea Exp $ */
+
+/*
+
+Copyright (c) 1990  X Consortium
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the X Consortium shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from the X Consortium.
+
+*/
+
+/*
+ * Author:  Keith Packard, MIT X Consortium
+ */
+
+#include    "fontmisc.h"
+#include    "fontstruct.h"
+
+FontComputeInfoAccelerators(pFontInfo)
+    FontInfoPtr pFontInfo;
+{
+    pFontInfo->noOverlap = FALSE;
+    if (pFontInfo->maxOverlap <= pFontInfo->minbounds.leftSideBearing)
+       pFontInfo->noOverlap = TRUE;
+
+    if ((pFontInfo->minbounds.ascent == pFontInfo->maxbounds.ascent) &&
+           (pFontInfo->minbounds.descent == pFontInfo->maxbounds.descent) &&
+           (pFontInfo->minbounds.leftSideBearing ==
+            pFontInfo->maxbounds.leftSideBearing) &&
+           (pFontInfo->minbounds.rightSideBearing ==
+            pFontInfo->maxbounds.rightSideBearing) &&
+           (pFontInfo->minbounds.characterWidth ==
+            pFontInfo->maxbounds.characterWidth) &&
+      (pFontInfo->minbounds.attributes == pFontInfo->maxbounds.attributes)) {
+       pFontInfo->constantMetrics = TRUE;
+       if ((pFontInfo->maxbounds.leftSideBearing == 0) &&
+               (pFontInfo->maxbounds.rightSideBearing ==
+                pFontInfo->maxbounds.characterWidth) &&
+               (pFontInfo->maxbounds.ascent == pFontInfo->fontAscent) &&
+               (pFontInfo->maxbounds.descent == pFontInfo->fontDescent))
+           pFontInfo->terminalFont = TRUE;
+       else
+           pFontInfo->terminalFont = FALSE;
+    } else {
+       pFontInfo->constantMetrics = FALSE;
+       pFontInfo->terminalFont = FALSE;
+    }
+    if (pFontInfo->minbounds.characterWidth == pFontInfo->maxbounds.characterWidth)
+       pFontInfo->constantWidth = TRUE;
+    else
+       pFontInfo->constantWidth = FALSE;
+
+    if ((pFontInfo->minbounds.leftSideBearing >= 0) &&
+           (pFontInfo->maxOverlap <= 0) &&
+           (pFontInfo->minbounds.ascent >= -pFontInfo->fontDescent) &&
+           (pFontInfo->maxbounds.ascent <= pFontInfo->fontAscent) &&
+           (-pFontInfo->minbounds.descent <= pFontInfo->fontAscent) &&
+           (pFontInfo->maxbounds.descent <= pFontInfo->fontDescent))
+       pFontInfo->inkInside = TRUE;
+    else
+       pFontInfo->inkInside = FALSE;
+}
+
+FontCouldBeTerminal(pFontInfo)
+    FontInfoPtr pFontInfo;
+{
+    if ((pFontInfo->minbounds.leftSideBearing >= 0) &&
+           (pFontInfo->maxbounds.rightSideBearing <= pFontInfo->maxbounds.characterWidth) &&
+           (pFontInfo->minbounds.characterWidth == pFontInfo->maxbounds.characterWidth) &&
+           (pFontInfo->maxbounds.ascent <= pFontInfo->fontAscent) &&
+           (pFontInfo->maxbounds.descent <= pFontInfo->fontDescent) &&
+           (pFontInfo->maxbounds.leftSideBearing != 0 ||
+            pFontInfo->minbounds.rightSideBearing != pFontInfo->minbounds.characterWidth ||
+            pFontInfo->minbounds.ascent != pFontInfo->fontAscent ||
+            pFontInfo->minbounds.descent != pFontInfo->fontDescent)) {
+       /* blow off font with nothing but a SPACE */
+       if (pFontInfo->maxbounds.ascent == 0 && 
+           pFontInfo->maxbounds.descent == 0)
+               return FALSE;
+       return TRUE;
+    }
+    return FALSE;
+}